Improvement in gar-brakes



S. HEWITT Car-Brake.

No. 207,179. Patented Aug. 20, 1878.

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WITNESSES: I INYENTOR:

ATTORNEYS.

SILAS HEWITT, or snnnoA FALLS, n w rose.

in; movement in oen eeenss.

Specification forming part of Letters Potent No. 207,139, dated August20, 1878; application filed July 6,1878.

lJIiI-iifi that exerts a double frictional action by contact with thewheelsand rails, so as to he more powerful and; effective then. thesingle brakes which have heretofore been op plied either to the wheels orto the rails.

Elie n vention consists of e jointed double broke-shoe, that is hung insuch.- e manner to the truck-frame end'so connected with the operatingand releasing mechanism that one section of the shoe first spoiled tothe wheel,-

and then the other section to the rnii, and releesed 1n reverseorder. i

Referring to the-drawings, A represents a ceirtrnok'ofitl e nsnztlconstruction, to the frame of which are hung, in proper proximitytothecar-wheels,byhinge-connections,thedouhi qri ompoiind brake-shoes B.Each brakeshoeBis constructed of two-hinged-seetions,

' of which the -upper section, of Genome shape,

is intended to hear on the tire of the wheel,

while the iower convex section is intended to fleet on the rail of thetrack. The upper concave sections-of the shoes of two cor 'espond in;truck-wheels are connected rigidly by a vtronsverse crank-rod, 0, whosecrank-arms a are jointed by crank-rods bto pivots of a fillcrnmed lever,d, at points equidistant from the fulcrum.

aha-11d hrekewheel' with pawl end ratchet slent mechanism. By turn.-

ng the eel in one direction the folcrurned ievoris oeereted, and thebrake-shoes of the wheels epplied'in-thc nsnel manner, while, byrelensing thehend-wheel, thebreke, shoes are teken'ofitliewheels,thereturn nioition heingfl-eecelereted-hy means 'o bend or Iothersprings 2:, connected to crank-arms f of the'trensverserods fThelowerfeonrexsectionsofthehmlgeshoes out hinge connection at I Thelever dis operated by e 1e ver rod connection and suitable gearing fromare faced with metal, the facings or linings being flanged at the insideto pass down sidewise of the rail-heads. The lower shoe sections arealso laterally connected by a bracerod, 9, and the outer end of thelower section connected with the upper section by a bar, D, which ispivoted to the brace-rod g at the 'lower end, and guided bye slot, h, atthe up- {Jer end on e fixed pin, h, of the upper shoe section.

The bar I) is pivoted about midway between its ends to a fixedcrank-arn, i, of the tren verse rod 0 ofthe upper broke-shoes, and therebythe'lower shoe section operated and applied to the rail.

By turning the hand. wheel the ripper broke shoes are first applied tothe wheels, and by continuing the turning the lower shoes to the rails,hytheection'of the eritiilorodend sliding bars.

0n releasing'the brakes the lower shoes are first raised, and then therapper shoes taken 0% front; the wheels in reverse order, as he-'ihebiekeinan has it in his power to amply one or both shoes, Recordingto the friction desired to be exerted, so as to prodnce'thereby at willeither-n single or double brake action.

If desired, the double shoe may he made in the form of an elhow'lever,of one piece, withthe en gle of the-shoe section, in which case,however, the upper and lower brekeshocs are applied at the same time.

leinswere that it is not broadly-new to use a eomyonnd brake-shoe formedof ones cilleting frame'so arranged that one end is forced down on therail by the frietion of the brake-shoesg'hnt f What I claim is-- i In acompound oer-brake, tlietwo hinged sectionsB B of each slice, connectedrigidly with those or the-other by e orenkrori, C, in

combination with eonctz' ll lain to 5' see- 7 s 7 v rod, y, -ot' thelower sections, one. guided by a slot on e fixed pin of s nger section,shown and described.

"ivitmesses: v

FAITL Genres, G. Snnewros,v

SlLAS HE'Wl'lTr

